#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include<ctype.h>
int main()
{
	char arr[] = "I Am a Student";
	int sz = sizeof(arr) / sizeof(arr[0]);
	for (int i = 0;i < sz;i++)
	{
	//while (arr[i] >= 'a' && arr[i] <= 'z')//
		while(islower(arr[i]))
		{
			//arr[i] -= 32;//
			arr[i] = toupper(arr[i]);
		}
		//printf("%c", arr[i]);//
	}
	printf("%s\n", arr);
	return 0;
}